The report released today uncovers the details of the “opportunistic sexual predator’s” behaviour at hospitals.

Kate Lampard QC, who oversaw the investigation by the Department of Health and West London Mental Health Trust (WLMHT), reveals at some point during his time at Broadmoor, from 1968 to 2004, Savile was given keys which allowed him unrestricted access to ward areas, day rooms and patient rooms.

Alternative entrances to some wards allowed him to reach areas unsupervised and without the knowledge of those in charge.

Some staff enforced strict security procedures and distrusted Savile’s motives while other staff were more tolerant and failed to enforce strict security and supervision.

He said: “For 150 years Broadmoor has provided treatment to some of the most mentally ill patients in England.

“Broadmoor Hospital is often the first safe place our patients have found in their lives.

“Lives which have often been filled with violence, neglect and abuse.

“This is what makes the reading of the detailed investigations into the abuse so disturbing.”

He added although it had been 15 years since the abuse Savile put his victims through it was only now the full extent of his behaviour has been uncovered.

Mr Shrubb said: “For all those years patients and staff who were abused by Savile have kept silent.

“Some from fear that they would not be believed.

“Who would believe a dangerous mentally ill patient against a national hero.

“Or because of fear that they would be punished for speaking out.

“I want to say thank you to those who were abused by Jimmy Savile in Broadmoor, you have shown great strength and bravery in speaking out about these awful events.

“I realise my comments can’t heal the injuries that Jimmy Savile has inflicted on you through his callous abuse of your vulnerability but I can offer my most sincere and heartfelt apologies on behalf of Broadmoor Hospital and the WLMHT.”